Input validation error in etcd - #VU130099
Published: August 5, 2020 / Updated: May 5, 2026
Vulnerability identifier: #VU130099
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
etcd
etcd
Software vendor:
CoreOS
CoreOS
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper input validation in parseCompactionRetention in embed/etcd.go when processing a negative auto compaction retention value. A local user can supply a negative retention value to cause a denial of service.
The issue can trigger a history compaction loop, resulting in increased CPU usage and log spam.
Remediation
Install security update from vendor's website.